Python type checking code example

Example 1: typage in python

# for a string named str1
str1: str = "this is a string"
#for an int named toto
toto: int
#and it works for every types (str, int, floats, dict...)

Example 2: check type of variable in python

str = "Hello"
type(str)

Example 3: specify return type python function

def greeting(name: str) -> str:
  return 'Hello, {}'.format(name)

Example 4: python type hint list

# For collections, the name of the type is capitalized, and the
# name of the type inside the collection is in brackets
x: List[int] = [1]
x: Set[int] = {6, 7}
  
# For simple built-in types, just use the name of the type
x: int = 1
x: float = 1.0
x: bool = True
x: str = "test"
x: bytes = b"test"